The Leo Burnett Building, located on 35 West Wacker Drive at North Dearborn Street in the Chicago Loop

Chicago Loop

The Loop or Chicago Loop is one of 77 officially designated Chicago community areas located in the City of Chicago, Illinois. It is the historic commercial center of downtown Chicago...

, is a 46 story, 635 foot (193 m) tall skyscraper

Skyscraper

A skyscraper is a tall, continuously habitable building of many stories, often designed for office and commercial use. There is no official definition or height above which a building may be classified as a skyscraper...

 above the Chicago River

Chicago River

The Chicago River is a system of rivers and canals with a combined length of that runs through the city of the same name, including its center . Though not especially long, the river is notable for being the reason why Chicago became an important location, as the link between the Great Lakes and...

's west bank. When built in 1989, it was the 12th tallest structure in Chicago. It was designed by Kevin Roche-John Dinkeloo and Associates and Shaw & Associates. It is a postmodern design made with granite

Granite

Granite is a common and widely occurring type of intrusive, felsic, igneous rock. Granite usually has a medium- to coarse-grained texture. Occasionally some individual crystals are larger than the groundmass, in which case the texture is known as porphyritic. A granitic rock with a porphyritic...

, masonry

Masonry

Masonry is the building of structures from individual units laid in and bound together by mortar; the term masonry can also refer to the units themselves. The common materials of masonry construction are brick, stone, marble, granite, travertine, limestone; concrete block, glass block, stucco, and...

, glass

Glass

Glass is an amorphous solid material. Glasses are typically brittle and optically transparent.The most familiar type of glass, used for centuries in windows and drinking vessels, is soda-lime glass, composed of about 75% silica plus Na2O, CaO, and several minor additives...

, steel

Steel

Steel is an alloy that consists mostly of iron and has a carbon content between 0.2% and 2.1% by weight, depending on the grade. Carbon is the most common alloying material for iron, but various other alloying elements are used, such as manganese, chromium, vanadium, and tungsten...

 and concrete

Concrete

Concrete is a composite construction material, composed of cement and other cementitious materials such as fly ash and slag cement, aggregate , water and chemical admixtures.The word concrete comes from the Latin word...

. The windows are divided by stainless steel bars, which is typical of "Chicago windows

Chicago school (architecture)

Chicago's architecture is famous throughout the world and one style is referred to as the Chicago School. The style is also known as Commercial style. In the history of architecture, the Chicago School was a school of architects active in Chicago at the turn of the 20th century...

."

Tenants

It houses advertising agency Leo Burnett Worldwide

Leo Burnett Worldwide

Leo Burnett Worldwide is an American advertising company, created in 1935 by Leo Burnett. The company was opened in Chicago in 1935. In 1950 the company started its two first major advertising projects, for Kellogg’s and P&G....

, from which it derives its name. The building is also home to the law firm

Law firm

A law firm is a business entity formed by one or more lawyers to engage in the practice of law. The primary service rendered by a law firm is to advise clients about their legal rights and responsibilities, and to represent clients in civil or criminal cases, business transactions, and other...

 of Winston and Strawn and the restaurant Catch 35. Media services agency Starcom Worldwide has its headquarters located in the building as well.

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